Reenforced paper vessel



Jan. 1,

E. W. LABOMBARDE REENFORCED PAPER VES'SEL Filed Sept. 2. 1921 Fig.1

Patented Jan. 1, 1924.

UNITED STATES ELI E W. LAZBOMBARDE, or NASHUA; NEW HAMPSHIRE.

REENFORCED PAPER vEssEL, v

Application filed September 2, 1921. Serial No. 497,886.

To all whom it may concem:

Be it known thatI, ELIE W. LABOM ARDE, a citizen of the United States, and resident of Nashua, in the county of Hill'sborough and State of New Hampshire, have invented certain new and useful Improvements in Reenforced Paper Vessels, of which the following is a specification.

This invention relates to paper vessels or boxes to contain liquids such as milk, or partly liquid substances such as oysters and pickles, and has particular reference to vessels made from flat blanks which, when cross section and, consequently, have corners which are difiicult to so form and" secure as to'be leak-tight.

One of the objects of the invention is to provide liquid containers economically made from fiat blanks having-patches sojlocated thereon that when the blanks are folded to.

form receptacles, the'corners, especially at the bottom of the receptacle, are so reenforc'ed as to effectually resist the tendency of liquid to force openings at said corners. Preferably the patches are so located and secured that when the blanks are folded to receptacle or container form the patches are doubled or overfolded upon themselves and form packing or caulking at the corner joints. V

' Another object of the invention is'to provide an improved paper receptacle for liquids having an integral portion to serve as a spout when the receptacle is being emptie Another object is to provide an improved receptacle for liquids having a top closable portion which Wlll not cause a splashing of the liquid when the filled receptacle is being closed. I

With these and other objects in view, the invention consists in the improvements which I shall now proceed to describe and claim.

Of the acompanying drawings:

Figure 1 is a plan view of a blank with its cornerreinforcing patches, the blank illustrated being oneof manyforms or types which may be employed in carrying out the reinforcing feature of my invention.

Figure 2 is a perspective view of the blank folded to receptacleform, a portionbeing brokenout to show one of the caulked corners.

Figures 3 and 4 are sectional perspective views illustrating howthe patches automatically double or over-foldas the blank is folded, the area of the blank shown in said I figures being that within the dotted area in Figure 1. It is to be understoodthat all of the patches double or overfold in substantially the same way when the blank is converted toreceptacle or box form.

Figure 5 is a perspective view of the receptacle as it appears when in condition for pouring liquid therefrom.

The particular form of blank illustrated in Figure 1 iscut and creased to form a bottom section '12 with flaps 13,13, two wall folded, form vessels which areangular in' portions 14, 15, one having'side flaps 16 and the other having side 'flaps- 17. The 'wall section 14 has an end flap 18 with an extension 19, and the wall section 15 has an 2 end flap20. The flaps 17 have extension flaps 21 which serve as part of the closure ofthe receptacle, and the flapilS has two sidewings' 22.

When this form of blank is folded and closed as shown in Figure 2, the receptacle or box has eight corners. 'Incarrying out my present invention each portion of the blank which is to form a corner of the box where leakage might occur has a patch 22 secured to it. Each of the patches is secured to that surface of the blank which is inside when folded up. The patches for the bottom corners maybe divided or continuous as shown 1n Figure 1.

Thepatches ware preferably of strong bleached kraft paper. They'are adhesively secured to the paper board blank before the blank. is waxed or otherwise so treated as to prevent them from being sufliciently held in place during folding to automatically double over as presently described. It is not necessary that the patches be firmly secured. In fact it is preferable that the adhesion shall be of a nature which will hold the patches in place on the blank but will enable portions of the patches to pull away whenever-folded as shown in Figures 3and 4, the patches being of such strong yet flexible material as not to tear but be lifted up where necessary to double over and permit the tucking in of an adjacent edge portion of a'blank flap, this last being best'shown.

in Figure 2. g

After the patches have been. located as described, the blank withits patches may be Figure 4: which is an outside View of the same corner as in Figure 3. Upon completion of the folding the patches are compactly fOlflQCl and confined asindicated in Figure 2.

It will now be understood that I have provided a foldable blank with reinforcing members at those portions through or past which liquid is liable to force its way when the blank is converted to receptacle form and filled; alsothat the doubling or over-folding ,of the patches constitutes practically an automatic caulking of the seams at and close to the corners ofthe receptacle, which "locations are always the ones where leakage is most likely to occur. I

' VVhen the blanlli 'is folded, and assuming that a suitable'adhesive has been applied to the proper portions thereof to hold it in folded condition for receiving liquid, it will be substantially as shown in Figure 5, with the flaps 17 inside the flaps 16, the flaps 13 extending up outside the flaps 16, and the upper or topsclosing members standing straight up, with the wings 22 extending inside the flaps 21and holding the latter steadily apart so that the receptacle can either be readily nested into another for storage or shipment or can beconvenient'ly filled; And the box presents a smooth interior, having no upper edges of any portions inside the box to interfere with nesting ,or topermit liquid to passv in behind such edges when being filled.

After the receptacle has bee-n filled, the flap 18 isclosed in, carrying the extension 19 with it. At the same time the wings 22 slide down inside the flaps 17 until the abrupt shoulders 2 of said wings contact with-the inner face of the wall 14, thereby stopping further movement ofthe flap 18 below a horizontal position and preventing a splashingof the milk or other liquid. This also results in holding the flap 18 in position to have the flap 20 folded snugly onto it. After the flap 20 is down ontothe flap 18, doubling the extension lip 19 over, thetop cover flaps 21 are folded toward each other and may be connected by a sealing strip 28 as indicated in Figure 2.-

1 "W n 2 em ano h r rerpqs W "lien s- 1 alid lq fil 11 s to bpe j e the ea ie'etlz a if ee has es? eeplaye he rea re ire tha opened to the positions. indicated inFigure 5. The flap 18, with its side wings 22, then serves as a spout for directing liquid being poured from the box. To aid this spout function;theblankfprior to its being folded is formed with a crease y extending longitudinally of'the flap 18 and its extension 19. This causes thesaidflap and its extension to have a natural tendency to curve or bend outwardly as nd cated in F gure fi, andotlns am W e, no el me ha of attaining h resu -r The. abjec Q th s' e ur my invention which I am about to describe is to furnish paper 'vesselsiv which have comple ly axed (w ln pmo sd) innerval and theouter surfacesflf which are entirely:

f e of a or th Wat rp o ng material. To attain this object 'teach'blank is waxed n s r ace o ly v r t es areas wh mpr s he sect ons or flap? portions inur a' eso he-nor io s lw a lapi m y; he fie teds' y. trimmi g h blan through amachine iI,1 f' ;1 direction w of the genms to the contents of [the 'con- 7 di a e in gure -l 2, s 11 .2 and 2 l vi g entirely ncoated-t e a Q he mach ne h ving, a roH-Ornthefi means for applying a coating to the upper surface (or .to the under snr'face, according to whether the blank passesrnnder; or, over h app y ng m ans) f th areas20, 15,

7 8 and--1 *Ehen th blank will be passed in the direction of the arrow 12 to be coated-"over theareasf 17 and 21. 'This treatment leavesthe 'QthBI' surface 7 of the en i e la e l-coa d nd t refore, since the portions 13, 1.6,fare1iotcc1ated' on either surface, the adhesive employed to secure the-parts in the folded, orset up condition 7 shown in Figure 2doesnot have its action interfered with by the presence :of w'ax between the arts WlllChwHI'fi required to stick together. Thistreatment however re sul w rirepel ent mater a ing carried by all 'those surfaces which are to'be exposed to the contents of the receptacle when theblank is folded to the. condition shownin Figures 21and 5, the outer surfaces o the recepta le e g en r l unabated- Thereare several advantages. resulting from this method of treating and folding t e. blanksone e ng hat a lesserpamcunt 9t rerafinen heating: material is used than when both surfaces of the blank are coated partially or wholly, another being that printed matter can be applied anywhere on the un-coated surfaces of the blanks either before or after the treatment described, thereby enabling clearer reading matter to be exhibited on the outside of the receptacles than when printed surfaces also carry paraffine. Another advantage is that the coating can be efiected simply and rapidly and accurately. 7

So far as this last described feature of my invention is concerned, I do not limit myself to the employment also of the re inforcing patches a", because there are many uses for paper boxes having waxed inner surfaces and un-waxed outer surfaces which do not require that the corners of the boxes shall be reenforced.

Having now described my invention, I claim: 7

1. An angularly creased blank having reinforcing patches extending across the intersecting creases which define the corners when the blank is folded to container form.

2. A water-proofed blank for a paper container having reinforcing patches at those portions which form the cornersof the container.

3. A water-proofed paper receptacle having caulking material at those portions which form the bottom corners of the receptacle.

4. container comprising an angularly folded paper blank provided with an internal layer of leak-stopping material at another direction to a predetermined portion of the same surface of the blank, whereby one surface is partially coated and the other surface is left entirely uncoated.

6. The method of making a water-proof receptacle, consisting in first applying a water-repellent material progressively in one direction to a portion of one surface of a blank, then applying water-repellent material progressively in another direction to a predetermined portion of the same surface of the blank, leaving one surface partially coated and the other surface entirely uncoated, and then folding the blank to receptacle form and adhesively securing uncoated surface portions of the blank together.

In testimony whereof I have aflixed my signature. i r V ELIE W. LABOMBARDE.

Witnesses:

ROBERT HAMBLETT,

AMEDEE L. GAUDETTE. 

